US10059082B2 - Uni-directional cloth, laid fabric and preparation method thereof, and laid fabric product - Google Patents

Uni-directional cloth, laid fabric and preparation method thereof, and laid fabric product Download PDF

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US10059082B2
US10059082B2 US14/900,156 US201314900156A US10059082B2 US 10059082 B2 US10059082 B2 US 10059082B2 US 201314900156 A US201314900156 A US 201314900156A US 10059082 B2 US10059082 B2 US 10059082B2
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molecular weight
ultra
high molecular
weight polyethylene
uni
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US20160144597A1 (en
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Ruiwen YIN
Changgan Ji
Junying Ma
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ZHENGZHOU ZHONGYUAN DEFENSE MATERIAL Co Ltd
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ZHENGZHOU ZHONGYUAN DEFENSE MATERIAL Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/03—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers with respect to the orientation of features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/12—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by the relative arrangement of fibres or filaments of different layers, e.g. the fibres or filaments being parallel or perpendicular to each other
    • B32B7/005—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B32B2250/242—All polymers belonging to those covered by group B32B27/32
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2571/00—Protective equipment
    • B32B2571/02—Protective equipment defensive, e.g. armour plates or anti-ballistic clothing

Definitions

  • the present invention relates to a chemical fiber fabric, in particular a uni-directional cloth, a laid fabric, preparation method thereof and a laid fabric product.
  • An ultra-high molecular weight polyethylene (UHMW-PE) fiber is a synthetic fiber. Its molecular structure has very high straightening parallelism and degree of orientation, and such molecular structure determines that the ultra-high molecular weight polyethylene fiber has very high strength and modulus and has the advantages of good chemical stability, corrosion resistance and the like.
  • the above properties of the ultra-high molecular weight polyethylene fiber are better than those of an aramid fiber, and the ultra-high molecular weight polyethylene fiber is widely used in the field of bulletproof protection for military and polices and becomes a mainstream material replacing a traditional steel structure bulletproof material in the field.
  • the strength of a uni-directional cloth (Uni-Directional Cloth, also known as UD fabric) is centralized in a certain direction.
  • a laid fabric can be prepared by crisscross laminating the multiple uni-directional cloth at certain angles.
  • the laid fabric made of the ultra-high molecular weight polyethylene fibers is generally prepared by adopting the following process: tidily arranging multiple ultra-high molecular weight polyethylene fibers by a warping process of realizing uniformity, parallelism, straightness and the like, bonding the various fibers with an adhesive to prepare the uni-directional cloths, sequentially crisscross spreading the multiple uni-directional cloths according to 0 degree/90 degrees and bonding the uni-directional cloths with the adhesive to prepare the laid fabric.
  • the uni-directional cloth prepared by the existing process comprises: the multiple ultra-high molecular weight polyethylene fibers which are warped along a direction and bonded into a whole.
  • each ultra-high molecular weight polyethylene fiber is of a tow-like structure and each ultra-high molecular weight polyethylene fiber is an independent individual, the warping process of the fibers is complex, the production cost is high, the fibers are liable to breaking, distortion, intertwining, knotting, non-uniform arrangement and other defects in warping, coating and other process flows, these defects will hinder the effective energy transfer of external force by the uni-directional cloth or the laid fabric and are liable to causing stress concentration, and the strength, the bulletproof performance and other performances of the uni-directional cloth or the laid fabric are further reduced.
  • the present invention provides a uni-directional cloth with low cost and high strength, a laid fabric, preparation method thereof and a laid fabric product.
  • the present invention provides a preparation method of a uni-directional cloth, including:
  • the connecting the multiple ultra-high molecular weight polyethylene thin films or strips into a whole includes:
  • the preparation method further includes: drying the adhesive.
  • the drying the adhesive includes: drying the adhesive at 80-120° C.
  • any two adjacent ultra-high molecular weight polyethylene thin films or strips are at least partially overlapped; and the connecting the multiple ultra-high molecular weight polyethylene thin films or strips into a whole includes: bonding or hot-pressing the overlapped parts of any two adjacent ultra-high molecular weight polyethylene thin films or strips into a whole.
  • control conditions for hot-pressing include: the temperature is 50-130° C. and/or the pressure is 1-15 MPa.
  • the direction is the width direction of the ultra-high molecular weight polyethylene thin film or strip.
  • the width direction is perpendicular to the straightening direction of a molecular chain of the ultra-high molecular weight polyethylene thin film or strip.
  • the related parameters of the ultra-high molecular weight polyethylene thin film at least meet one or more of the following conditions:
  • the linear density is above 5000 deniers
  • the width is above 100 mm
  • the thickness is below 0.2 mm;
  • the breaking strength is above 10 grams/denier
  • the tensile modulus is above 800 grams/denier
  • the elongation at break is below 6%.
  • the related parameters of the ultra-high molecular weight polyethylene strip at least meet one or more of the following conditions:
  • the linear density is above 100 deniers
  • the width is 1-100 mm
  • the thickness is below 0.2 mm;
  • the breaking strength is above 10 grams/denier
  • the tensile modulus is above 800 grams/denier
  • the elongation at break is below 6%.
  • the present invention provides a uni-directional cloth which is prepared by the above preparation method of the uni-directional cloth.
  • the present invention further provides a preparation method of a laid fabric, including: sequentially crisscross compounding and laminating multiple uni-directional cloths at certain angles into a whole to obtain the laid fabric, wherein each uni-directional cloth includes: multiple ultra-high molecular weight polyethylene thin films or strips which are sequentially and continuously spread and mutually connected along a direction.
  • the sequentially crisscross compounding and laminating the multiple uni-directional cloths at the certain angles into a whole includes: sequentially crisscross laminating and spreading the multiple uni-directional cloths at certain angles and hot-pressing or bonding overlapped parts of the multiple uni-directional cloths.
  • one surface of each uni-directional cloth is coated with an adhesive, and the other surface of each uni-directional cloth is not coated with the adhesive; and the bonding any two adjacent uni-directional cloths includes: bonding the surface coated with the adhesive of one uni-directional cloth with the surface which is not coated with the adhesive of another uni-directional cloth in the process of crisscross compounding any two uni-directional cloths at certain angles.
  • intersection angles of any two adjacent uni-directional cloths are the same.
  • intersection angles are 0-90 degrees.
  • intersection angles are 45 degrees or 90 degrees.
  • intersection angles of at least two uni-directional cloths in the various uni-directional cloths are different from the intersection angles of other uni-directional cloths.
  • intersection angles of the two adjacent uni-directional cloths from the first uni-directional cloth to the last uni-directional cloth are gradually increased.
  • the present invention further provides a laid fabric which is prepared by adopting the preparation method of the laid fabric.
  • the present invention further provides a laid fabric product which is prepared from the laid fabric.
  • the ultra-high molecular weight polyethylene thin film or strip is a thin slice made of ultra-high molecular weight polyethylene and has a certain width and thickness, the width is much greater than the thickness, the strip is a strip-like thin slice which can be prepared independently or be formed by performing slitting process step before and after stretching the thin film, wherein the width of the strip is less than the width of the thin film, and the thickness is equivalent to that of the thin film.
  • the ultra-high molecular weight polyethylene thin film or strip itself has a certain width and thickness, is of an integral structure without integration points or trim lines and has the advantages of high strength, great modulus, small creep property, a relatively small stress concentration influence scope along the edge direction of the thin film and the like.
  • the uni-directional cloth or the laid fabric provided in each embodiment of the present invention is prepared on the basis of the ultra-high molecular weight polyethylene thin films or strips.
  • the various fibers do not need to be subject to a trivial process for warping treatment, and the amount of glue is obviously reduced and even avoided (if the adjacent ultra-high molecular weight polyethylene thin films or strips can be partially overlapped and connected by hot-pressing and the like), thereby reducing the probability of causing injuries to the interior of the ultra-high molecular weight polyethylene thin films or strips by the preparation process and being conductive to simplifying the process, lowering the cost and improving the production efficiency.
  • the probability of causing damages to the interior of the thin films or strips in the preparation process of the uni-directional cloth or the laid fabric is relatively low, the defects of breaking, distortion, intertwining, knotting, non-uniform arrangement and the like can be avoided, when the uni-directional cloth or the laid fabric prepared on the basis of the ultra-high molecular weight polyethylene thin films or strips is subject to an external force impact, the ultra-high molecular weight polyethylene thin films or strips are stressed as a whole, and force-bearing points can be diffused to force-bearing surfaces rapidly to effectively transfer energy, thereby improving the strength of the uni-directional cloth or the laid fabric and improving the bulletproof performance and other protection performances thereof.
  • FIG. 1 is a flow diagram of an embodiment of a preparation method of a uni-directional cloth provided by the present invention.
  • FIG. 2 is a schematic diagram of the structure of the first embodiment of a uni-directional cloth provided by the present invention.
  • FIG. 3 is a schematic diagram of the structure of the second embodiment of the uni-directional cloth provided by the present invention.
  • FIG. 4 is a schematic diagram of the structure of the third embodiment of the uni-directional cloth provided by the present invention.
  • FIG. 5 is a flow diagram of an embodiment of a preparation method of a laid fabric provided by the present invention.
  • FIG. 6 is a schematic diagram of the structure of the first embodiment of a laid fabric provided by the present invention.
  • FIG. 7 is a schematic diagram of the structure of the second embodiment of the laid fabric provided by the present invention.
  • FIG. 8 is a schematic diagram of the structure of the third embodiment of the laid fabric provided by the present invention.
  • Ultra-high molecular weight polyethylene is polyethylene with the molecular weight of above 1 million.
  • the traditional technologies applying the ultra-high molecular weight polyethylene take ultra-high molecular weight polyethylene fibers as the basis to prepare various products.
  • the technical solutions provided by the various embodiments of the present invention are essentially different from the traditional technologies applying ultra-high molecular weight polyethylene and are revolutionary innovations against the traditional technologies, namely, the ultra-high molecular weight polyethylene thin films or strips are used for replacing ultra-high molecular weight fibers to perform development and preparation of the uni-directional cloth and the laid fabric, and the core concept mainly includes: the ultra-high molecular weight polyethylene thin films or strips are used for replacing the traditional ultra-high molecular weight polyethylene fibers to prepare the uni-directional cloth and the laid fabric.
  • the ultra-high molecular weight polyethylene thin film or strip is a thin slice which is made of ultra-high molecular weight polyethylene and has a certain width and thickness, the width is much greater than the thickness, the strip is a strip-like thin slice which is formed by performing slitting process step before and after stretching the thin film, wherein the width of the strip is less than the width of the thin film, and the thickness is equivalent to or greater than that of the thin film.
  • the ultra-high molecular weight polyethylene thin film or strip provided by the present invention is different from the ultra-high molecular weight polyethylene fibers and also different from a plane formed by bonding the multiple ultra-high molecular weight polyethylene fibers, and the significant difference lies in that: the ultra-high molecular weight polyethylene thin film or strip provided by the present invention has a certain width and thickness and is of an integral structure without integration points or trim lines.
  • the uni-directional cloth or the laid fabric provided in each embodiment of the present invention is prepared on the basis of the ultra-high molecular weight polyethylene thin films or strips.
  • the ultra-high molecular weight polyethylene thin films or strips are taken as a whole for treatment, thereby having good structural integrity, being simple in preparation process, eliminating a complex process for respectively arranging multiple fiber silks, obviously reducing the probability of producing burrs on the surfaces of the thin films or strips and also obviously reducing the probability of producing breaking, distortion, intertwining and other phenomena in the thin films or strips.
  • the ultra-high molecular weight polyethylene thin films or strips When bearing a load, the ultra-high molecular weight polyethylene thin films or strips are stressed as a whole, so that the strength of the uni-directional cloth or the laid fabric is relatively high and the strength utilization ratio is effectively improved.
  • the strength of the uni-directional cloth or the laid fabric prepared on the basis of the ultra-high molecular weight polyethylene thin films or strips is higher than a product prepared by adopting the ultra-high molecular weight polyethylene fibers with the same denier number, the cost of the former is obviously lower than the latter, and the uni-directional cloth or the laid fabric has the advantages of good structural integrity, high strength, high strength utilization ratio, high production efficiency, low processing cost, light weight, small surface density, good flexibility and the like.
  • a preparation method of a uni-directional cloth includes:
  • Step S 101 sequentially and continuously spreading multiple ultra-high molecular weight polyethylene thin films or strips along a direction;
  • Step S 102 connecting multiple ultra-high molecular weight polyethylene thin films or strips into a whole to obtain the uni-directional cloth.
  • the core concept of the embodiment is that, the ultra-high molecular weight polyethylene thin films or strips are used for directly replacing the traditional ultra-high molecular weight polyethylene fibers to prepare the uni-directional cloth.
  • the multiple ultra-high molecular weight polyethylene thin films or strips are sequentially and continuously spread along the width direction of the ultra-high molecular weight polyethylene thin films or strips, and the width direction is perpendicular to the straightening direction of molecular chains of the ultra-high molecular weight polyethylene thin films or strips.
  • the ultra-high molecular weight polyethylene thin films or strips are sequentially and continuously spread through a tension regulating roller at the drawing tension of not more than 5 g/d.
  • the connecting the multiple ultra-high molecular weight polyethylene thin films or strips into a whole includes:
  • any two adjacent ultra-high molecular weight polyethylene thin films or strips are at least partially overlapped; and the overlapped parts are coated with the adhesive, compared with the traditional laid fabric, lining membranes are not required, and only the overlapped parts need to be coated with the adhesive, thereby effectively reducing the amount of glue, further reducing the internal injuries of the ultra-high molecular weight polyethylene thin films or strips, being conductive to simplifying the process, lowering the cost and improving the production efficiency.
  • any two adjacent ultra-high molecular weight polyethylene thin films or strips are bonded and are not mutually overlapped, and the adhesive is coated on the adjacent parts of any two adjacent ultra-high molecular weight polyethylene thin films or strips to bond the two ultra-high molecular weight polyethylene thin films or strips together, thereby utilizing the area of the ultra-high molecular weight polyethylene thin films or strips to the greatest extent, reducing the amount of the glue to the greatest extent, further simplifying the process, lowering the cost and improving the production efficiency.
  • the connecting the multiple ultra-high molecular weight polyethylene thin films or strips into a whole includes: hot-pressing the overlapped parts of any two adjacent ultra-high molecular weight polyethylene thin films or strips into a whole.
  • the control conditions for hot-pressing include: the temperature is 50-130° C. and/or the pressure is 1-15 MPa; and the hot-pressing temperature is lower than a melting point of the ultra-high molecular weight polyethylene thin films or strips.
  • the coating of the adhesive is not required, thereby reducing the internal injuries of the ultra-high molecular weight polyethylene thin films or strips to the greatest extent, further simplifying the process, reducing the cost and improving the production efficiency.
  • the preparation method further includes: drying the adhesive.
  • the drying the adhesive includes: drying the adhesive at 80-120° C., the temperature is lower than the melting point of the ultra-high molecular weight polyethylene thin films or strips, and the injuries to the thin films or strips can be avoided when the adhesive is dried.
  • the uni-directional cloth after drying is cooled down.
  • the prepared uni-directional cloth is wound into a coil to improve the uniformity of a production workshop.
  • the related parameters of the ultra-high molecular weight polyethylene thin film in each embodiment of the present invention at least meet one or more of the following conditions: the linear density is above 5000 deniers; the width is above 100 mm; the thickness is below 0.2 mm; the breaking strength is above 10 grams/denier; the tensile modulus is above 800 grams/denier; and the elongation at break is below 6%.
  • the related parameters of the ultra-high molecular weight polyethylene strip in each embodiment of the present invention at least meet one or more of the following conditions: the linear density is above 100 deniers; the width is 1-100 mm; the thickness is below 0.2 mm; the breaking strength is above 10 grams/denier; the tensile modulus is above 800 grams/denier; and the elongation at break is below 6%.
  • the preparation is performed on the basis of the ultra-high molecular weight polyethylene thin films or strips, and compared with the traditional uni-directional cloth prepared on the basis of the ultra-high molecular weight polyethylene fibers, the various fibers do not need to be subject to a trivial process for warping treatment, thereby reducing the probability of causing injuries to the interior of the ultra-high molecular weight polyethylene thin films or strips by the preparation process and being conductive to simplifying the process, lowering the cost and improving the production efficiency.
  • the present invention provides a uni-directional cloth, including multiple ultra-high molecular weight polyethylene thin films or strips which are sequentially and continuously spread and mutually connected along a direction.
  • the ultra-high molecular weight polyethylene thin film is a thin slice made of ultra-high molecular weight polyethylene and has a certain width and thickness, the width is much greater than the thickness, the strip is a strip-like thin slice which is formed by performing slitting process step before and after stretching the thin film, wherein the width of the strip is less than the width of the thin film, and the thickness is equivalent to that of the thin film.
  • the ultra-high molecular weight polyethylene thin film or strip itself has a certain width and thickness, is of an integral structure without integration points or trim lines and has the advantages of high strength, great modulus, small creep property, a relatively small stress concentration influence scope along the edge direction of the thin film and the like.
  • the direction is the width direction of the ultra-high molecular weight polyethylene thin film or strip.
  • the width direction is perpendicular to the straightening direction of a molecular chain of the ultra-high molecular weight polyethylene thin film or strip.
  • the multiple ultra-high molecular weight polyethylene strips 101 are sequentially and continuously spread and connected along the transverse direction, wherein the direction of molecular chains of the ultra-high molecular weight polyethylene strips 101 is the longitudinal direction, namely, the spreading direction is perpendicular to the direction of the molecular chains of the ultra-high molecular weight polyethylene strips 101 , and when being subject to an external force impact, the external force is diffused along the direction of the molecular chains.
  • any two adjacent ultra-high molecular weight polyethylene thin films or strips are at least partially overlapped, and the overlapped parts are bonded or connected by hot pressing.
  • the overlapped parts of the two adjacent ultra-high molecular weight polyethylene strips 201 are coated with glue to bond the two adjacent ultra-high molecular weight polyethylene strips 201 together.
  • lining membranes are not required, and only the overlapped parts need to be coated with the glue, thereby effectively reducing the amount of glue, further reducing the internal injuries of the ultra-high molecular weight polyethylene thin films or strips, being conductive to simplifying the process, reducing the cost and improving the production efficiency.
  • the two adjacent ultra-high molecular weight polyethylene strips 201 can be connected together by hot-pressing the overlapped parts through a hot-pressing way, and the coating of the glue is not required, thereby reducing the internal injuries of the ultra-high molecular weight polyethylene thin films or strips to the greatest extent, further simplifying the process, lowering the cost and improving the production efficiency.
  • any two adjacent ultra-high molecular weight polyethylene thin films or strips are bonded and are not mutually overlapped, as shown in FIG. 4 , by taking the ultra-high molecular weight polyethylene strips as an example for illustration, the glue is coated on the adjacent parts of any two adjacent ultra-high molecular weight polyethylene strips 301 to bond the two ultra-high molecular weight polyethylene strips 301 together, and the uni-directional cloth prepared by adopting the way can utilize the area of the ultra-high molecular weight polyethylene thin films or strips to the greatest extent, reduce the amount of the glue to the greatest extent, and further simplify the process, reduce the cost and improve the production efficiency.
  • the uni-directional cloth provided by the embodiment is prepared on the basis of the ultra-high molecular weight polyethylene thin films or strips, and compared with the traditional uni-directional cloth prepared on the basis of the ultra-high molecular weight polyethylene fibers, the various fibers do not need to be subject to a trivial process for warping treatment, thereby reducing the probability of causing injuries to the interior of the ultra-high molecular weight polyethylene thin films or strips by the preparation process and being conductive to simplifying the process, lowering the cost and improving the production efficiency; and in addition, when being subject to an external force impact, the ultra-high molecular weight polyethylene thin films or strips are stressed as a whole, and force-bearing points can be diffused to force-bearing surfaces rapidly to effectively transfer energy, thereby improving the strength of the uni-directional cloth or the laid fabric and improving the bulletproof performance and other protection performances thereof.
  • the embodiment provides a preparation method of a laid fabric, including:
  • Step S 201 sequentially crisscross compounding multiple uni-directional cloths at certain angles;
  • Step S 202 laminating the multiple uni-directional cloths which are crisscross compounded into a whole to obtain the laid fabric.
  • the uni-directional cloth includes: multiple ultra-high molecular weight polyethylene thin films or strips which are sequentially and continuously spread and mutually connected along a direction.
  • the sequentially crisscross compounding the multiple uni-directional cloths at the certain angles into a whole includes:
  • each uni-directional cloth is coated with an adhesive
  • the other surface of each uni-directional cloth is not coated with the adhesive
  • one surface coated with the adhesive of one uni-directional cloth is bonded with the surface which is not coated with the adhesive of another uni-directional cloth.
  • the coating of the adhesive is not required, thereby being conductive to simplifying the process, lowering the cost and improving the production efficiency.
  • intersection angles of any two adjacent uni-directional cloths are the same, and the intersection angles are 0-90 degrees.
  • intersection angles are 45 degrees or 90 degrees.
  • intersection angles of at least two uni-directional cloths in the various uni-directional cloths are different from the intersection angles of other uni-directional cloths.
  • intersection angles of the two adjacent uni-directional cloths from the first uni-directional cloth to the last uni-directional cloth are gradually increased, and the laid fabric prepared by adopting the way is mainly applied to manufacturing helmets.
  • the formed laid fabric can be formed by compounding two layers, or compounding four layers or compounding eight layers.
  • the preparation method of the laid fabric provided by the embodiment adopts the uni-directional cloths prepared from the ultra-high molecular weight polyethylene thin films or strips to prepare the laid fabric, the process is simple, the production cost is low, and the prepared laid fabric can be applied to the fields of national defense military, individual protection and civil use, such as bulletproof floors of helicopters, armored seats, reinforced cabinet doors, armored protection plates of tanks and ships, anti-scrap liners, synthetic anti-ballistic armors of tracked vehicles, tactical vehicles and commercial armored vehicles, housings of bulletproof cash carrying vehicles and armored weapons, protective housing covers of radars, bulletproof vests, bulletproof insert plates, helmets, bulletproof, puncture-proof, bulletproof and explosion-proof suitcases and other high-strength composite materials, such as high-strength suitcases, crashproof poles for the automobiles and the like.
  • the present invention provides a laid fabric which is formed by crisscross compounding and laminating the multiple uni-directional cloths described in the above embodiment at certain angles.
  • intersection angles of any two adjacent uni-directional cloths are the same and can also be different, and the intersection angles are 0-90 degrees.
  • the multiple uni-directional cloths 401 are compounded and laminated to form the laid fabric, and the intersection angles of the two adjacent uni-directional cloths 401 are 90 degrees.
  • the multiple uni-directional cloths 501 are compounded and laminated to form the laid fabric, and the intersection angles of the two adjacent uni-directional cloths 501 are 45 degrees.
  • the multiple uni-directional cloths 601 are compounded and laminated to form the laid fabric, in all the uni-directional cloths, the intersection angles of at least two uni-directional cloths are different from the intersection angles of other uni-directional cloths, the intersection angles of the two adjacent uni-directional cloths from the first uni-directional cloth to the last uni-directional cloth are gradually increased, and the laid fabric prepared by adopting the way is mainly applied to manufacturing helmets.
  • the overlapped parts of the two adjacent uni-directional cloths are bonded or connected by hot pressing. If the bonding way is adopted, one surface of each uni-directional cloth is coated with glue, the other surface of each uni-directional cloth is not coated with the glue, and one surface coated with the glue of one uni-directional cloth is bonded with the surface which is not coated with the glue of another uni-directional cloth.
  • the above laid fabric can be formed by compounding two layers or compounding four layers or compounding eight layers, and the corresponding surface densities are 60 g/m 2 , 120 g/m 2 and 240 g/m 2 respectively.
  • the laid fabric based on the ultra-high molecular weight polyethylene thin films or strips show an excellent bulletproof effect and can effectively resist the threat of the bullet.
  • the laid fabric has the advantages of light weight and good bulletproof effect and can be widely applied to bulletproof vests, bulletproof insert plates, helmets, bulletproof and puncture-proof clothes, back liners of armored vehicles, seats of helicopters and other high-strength composite materials, such as high-strength suitcases, crashproof poles for automobiles and the like.
  • the laid fabric provided by the embodiment is formed by compounding the uni-directional cloths prepared from the ultra-high molecular weight polyethylene thin films or strips, and when being subject to an external force impact, the ultra-high molecular weight polyethylene thin films or strips are stressed as a whole, and force-bearing points can be diffused to force-bearing surfaces rapidly to effectively transfer energy, so that the laid fabric has the advantages of high strength, great modulus, small creep property, a relatively small stress concentration influence scope along the edge direction of the thin film and the like and can be widely applied to the fields of national defense military, individual protection and civil use, such as bulletproof floors of helicopters, armored seats, reinforced cabinet doors, armored protection plates of tanks and ships, anti-scrap liners, synthetic anti-ballistic armors of tracked vehicles, tactical vehicles and commercial armored vehicles, housings of bulletproof cash carrying vehicles and armored weapons, protective housing covers of radars, bulletproof vests, bulletproof insert plates, helmets, bulletproof, puncture-proof, bulletproof and explosion-proof suitcase
  • the embodiment provides a laid fabric product prepared from a laid fabric, the laid fabric is prepared by crisscross compounding and laminating multiple uni-directional cloths at certain angles, and each uni-directional cloth includes multiple ultra-high molecular weight polyethylene thin films or strips which are sequentially and continuously spread and mutually connected along a direction.
  • the laid fabric product provided by the embodiment can be used for, but is not limited to bulletproof floors of helicopters, armored seats, reinforced cabinet doors, armored protection plates of tanks and ships, anti-scrap liners, synthetic anti-ballistic armors of tracked vehicles, tactical vehicles and commercial armored vehicles, housings of bulletproof cash carrying vehicles and armored weapons, protective housing covers of radars, bulletproof vests, bulletproof insert plates, helmets, bulletproof, puncture-proof, bulletproof and explosion-proof suitcases and other high-strength composite materials, such as high-strength suitcases, crashproof poles for automobiles and the like.
  • the laid fabric product As for the laid fabric product provided by the embodiment, as the laid fabric is prepared from the uni-directional cloths prepared from the ultra-high molecular weight polyethylene thin films or strips, when being subject to an external force impact, the ultra-high molecular weight polyethylene thin films or strips are stressed as a whole, and force-bearing points can be diffused to force-bearing surfaces rapidly to effectively transfer energy.
  • the laid fabric product prepared from the laid fabric has higher strength and better bulletproof performance.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Laminated Bodies (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
US14/900,156 2013-06-20 2013-06-20 Uni-directional cloth, laid fabric and preparation method thereof, and laid fabric product Active 2033-10-10 US10059082B2 (en)

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CN105620008B (zh) * 2015-09-08 2017-11-03 郑州中远防务材料有限公司 单向层合物及其制备方法和系统、无纬布及防护制品
CN207351295U (zh) * 2016-08-16 2018-05-11 包头北方嘉瑞防务科技有限公司 一种防弹头盔
ES2908235T3 (es) * 2017-04-25 2022-04-28 Hexcel Reinforcements Uk Ltd Una preforma con refuerzo local
CN108749255A (zh) * 2018-06-21 2018-11-06 江苏鸿华特种装备有限公司 Ud布复合机
CN114654860B (zh) * 2022-04-26 2024-04-19 郑州中远防务材料有限公司 一种能控制单向布张力稳定的单向布复合方法
CN114808467B (zh) * 2022-05-11 2024-06-21 郑州中远防务材料有限公司 一种单层单向布的制备系统、制备方法及其制得的单向布
TWI847605B (zh) * 2023-03-17 2024-07-01 巨森尼股份有限公司 輕量複合無緯布的製造方法及系統

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JP2016528398A (ja) 2016-09-15
PL3012101T3 (pl) 2020-03-31
AU2013393174A1 (en) 2016-01-07
KR20160012200A (ko) 2016-02-02
EP3012101A4 (fr) 2016-12-21
CN205439455U (zh) 2016-08-10
CA2914957C (fr) 2017-09-12
WO2014201655A1 (fr) 2014-12-24
ES2758951T3 (es) 2020-05-07
US20160144597A1 (en) 2016-05-26
AU2013393174B2 (en) 2016-08-04
EA201690062A1 (ru) 2016-05-31
EP3012101B1 (fr) 2019-09-18
CA2914957A1 (fr) 2014-12-24
EA031100B1 (ru) 2018-11-30
PT3012101T (pt) 2019-12-11

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